Yes mate, the compression ratio mentioned is using the ferriday decomp plate and a felpro head gasket, but i was going to use the sitech head gasket as i was going to use sitech to build up the engine with one of their heads and fit and map it as i couldnt get a Dave Baker head at the time. Using a sitech gasket would bring the comp ratio up so it would be a higher comp turbo engine instead of an older style low comp.

I dont know exactly what the part number is for the pistons, all i know is theyre forged and for a turbo application, im pretty sure je only make one set of turbo pistons for the 2.0ltr zetec anyway, you could message (sean) turboboss on here as the spec is the same as his bottom end was before he broke his car, iirc his engine made over 400bhp.

Dave.